KAOS (Khan Academy On a Stick), for those who don’t know - is an even lighter version of ka-lite. It drops the exercises and provides vanilla HTML navigation for browsing and searching the videos. On that topic…
I have put the www folder from KAOAS on a Apache server running on a Mac. The captioning works fine when accessed by HTML5 browsers from a computer, but not from mobile devices.
I solved the issue by changing your html:
I believe that the new code invokes the html standard view player which is more widely supported…. but this is just a guess. The controls are different than with your html, but show up on a tablet and work great. In order for this to work, I had to convert the captions from .srt to .vtt format. There are free converters that do batch conversions.
Hope this is helpful to anyone running into similar problems!
Creator’s note: I was surprised because video-js was put in place to improve compatibility: it works on older browsers that don’t support HTML5 video, and is supposed to work on everything modern too… but I guess that is not the case.
I have got an update to KAOS on my TODO list, and I’ll probably move to pure HTML5 and drop video-js. That will cut off IE8 and earlier users, but I’m thinking that may be OK at this point. I’ll still include the “download” link as a failsafe.
Questions and comments welcome!